Children's Aquarium Dallas said that several nurse sharks, a large green moray eel, many lesser-known fish, crustaceans, and ...

When animals nod off, they're most vulnerable to sneaky predators. But despite the risks, the need for sleep is so strong ...

Apple’s new podcast brings an extraordinary survival story to life with never-before-heard details about the Robertsons, a ...

Animals that navigate extreme conditions and environments have evolved to sleep in extreme ways. For a long time, scientists ...

In the age of dinosaurs—before whales, great whites or the bus-sized megalodon—a monstrous shark prowled the waters off ...

Large litters come at a cost, and domestic piglets are often born into intense competition for both milk and personal space.